Phase 3 scaffold: chat engine (WebSocket, FCM, pricing, timer, extension, history)
- Backend: WebSocket plugin, chat/pricing/timer/extension/closure/notification services - Client app: ChatBloc, pricing dialog, chat screen with message status, extension/goodbye flow, history - Mitra app: MitraChatBloc, ExtensionBloc, chat screen, extension accept/reject, history - Control center: free trial, extension timeout, early end config toggles - DB migration: chat_messages, session_closures, session_extensions, customer_transactions tables Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
84
mitra_app/lib/core/chat/extension_bloc.dart
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84
mitra_app/lib/core/chat/extension_bloc.dart
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import 'package:equatable/equatable.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
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import '../api/api_client.dart';
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// Events
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abstract class ExtensionEvent extends Equatable {
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@override
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List<Object?> get props => [];
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}
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class RespondToExtension extends ExtensionEvent {
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final String sessionId;
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final String extensionId;
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final bool accepted;
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RespondToExtension({required this.sessionId, required this.extensionId, required this.accepted});
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@override
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List<Object?> get props => [sessionId, extensionId, accepted];
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}
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class SubmitGoodbye extends ExtensionEvent {
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final String sessionId;
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final String message;
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SubmitGoodbye({required this.sessionId, required this.message});
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@override
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List<Object?> get props => [sessionId, message];
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}
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// States
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abstract class ExtensionState extends Equatable {
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@override
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List<Object?> get props => [];
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}
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class ExtensionIdle extends ExtensionState {}
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class ExtensionResponding extends ExtensionState {}
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class ExtensionShowGoodbye extends ExtensionState {}
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class ExtensionSubmitting extends ExtensionState {}
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class ExtensionComplete extends ExtensionState {}
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class ExtensionError extends ExtensionState {
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final String message;
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ExtensionError(this.message);
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@override
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List<Object?> get props => [message];
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}
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// Bloc
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class ExtensionBloc extends Bloc<ExtensionEvent, ExtensionState> {
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final ApiClient apiClient;
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ExtensionBloc({required this.apiClient}) : super(ExtensionIdle()) {
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on<RespondToExtension>(_onRespond);
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on<SubmitGoodbye>(_onSubmitGoodbye);
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}
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Future<void> _onRespond(RespondToExtension event, Emitter<ExtensionState> emit) async {
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emit(ExtensionResponding());
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try {
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await apiClient.post('/api/mitra/chat-requests/sessions/${event.sessionId}/extend-response', data: {
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'extension_id': event.extensionId,
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'accepted': event.accepted,
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});
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if (!event.accepted) {
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emit(ExtensionShowGoodbye());
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} else {
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emit(ExtensionIdle());
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}
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} catch (e) {
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emit(ExtensionError('Gagal merespon perpanjangan.'));
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}
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}
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Future<void> _onSubmitGoodbye(SubmitGoodbye event, Emitter<ExtensionState> emit) async {
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emit(ExtensionSubmitting());
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try {
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await apiClient.post('/api/shared/sessions/${event.sessionId}/close-message', data: {
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'message': event.message,
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});
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emit(ExtensionComplete());
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} catch (e) {
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emit(ExtensionError('Gagal mengirim pesan penutup.'));
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}
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}
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}
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351
mitra_app/lib/core/chat/mitra_chat_bloc.dart
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351
mitra_app/lib/core/chat/mitra_chat_bloc.dart
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import 'dart:async';
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import 'dart:convert';
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import 'package:equatable/equatable.dart';
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import 'package:firebase_auth/firebase_auth.dart';
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import 'package:flutter_bloc/flutter_bloc.dart';
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import 'package:web_socket_channel/web_socket_channel.dart';
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import '../api/api_client.dart';
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// Events
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abstract class MitraChatEvent extends Equatable {
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@override
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List<Object?> get props => [];
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}
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class ConnectChat extends MitraChatEvent {
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final String sessionId;
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ConnectChat(this.sessionId);
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@override
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List<Object?> get props => [sessionId];
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}
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class DisconnectChat extends MitraChatEvent {}
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class SendMessage extends MitraChatEvent {
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final String content;
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SendMessage(this.content);
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@override
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List<Object?> get props => [content];
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}
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class SendTyping extends MitraChatEvent {}
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class _MessageReceived extends MitraChatEvent {
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final Map<String, dynamic> data;
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_MessageReceived(this.data);
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@override
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List<Object?> get props => [data];
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}
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class _ConnectionError extends MitraChatEvent {}
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class MarkMessagesDelivered extends MitraChatEvent {
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final List<String> messageIds;
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MarkMessagesDelivered(this.messageIds);
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@override
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List<Object?> get props => [messageIds];
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}
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class MarkMessagesRead extends MitraChatEvent {
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final List<String> messageIds;
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MarkMessagesRead(this.messageIds);
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@override
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List<Object?> get props => [messageIds];
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}
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// States
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abstract class MitraChatState extends Equatable {
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@override
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List<Object?> get props => [];
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}
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class ChatInitial extends MitraChatState {}
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class ChatConnecting extends MitraChatState {}
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class ChatConnected extends MitraChatState {
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final List<ChatMessage> messages;
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final bool isOtherTyping;
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final int? remainingSeconds;
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final bool sessionExpired;
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final bool sessionClosing;
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final Map<String, dynamic>? extensionRequest;
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ChatConnected({
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required this.messages,
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this.isOtherTyping = false,
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this.remainingSeconds,
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this.sessionExpired = false,
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this.sessionClosing = false,
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this.extensionRequest,
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});
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ChatConnected copyWith({
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List<ChatMessage>? messages,
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bool? isOtherTyping,
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int? remainingSeconds,
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bool? sessionExpired,
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bool? sessionClosing,
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Map<String, dynamic>? extensionRequest,
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}) {
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return ChatConnected(
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messages: messages ?? this.messages,
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isOtherTyping: isOtherTyping ?? this.isOtherTyping,
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remainingSeconds: remainingSeconds ?? this.remainingSeconds,
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sessionExpired: sessionExpired ?? this.sessionExpired,
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sessionClosing: sessionClosing ?? this.sessionClosing,
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extensionRequest: extensionRequest ?? this.extensionRequest,
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);
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}
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@override
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List<Object?> get props => [messages, isOtherTyping, remainingSeconds, sessionExpired, sessionClosing, extensionRequest];
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}
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class ChatError extends MitraChatState {
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final String message;
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ChatError(this.message);
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@override
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List<Object?> get props => [message];
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}
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// Message model
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class ChatMessage {
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final String id;
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final String senderType;
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final String content;
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final String type;
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final String status;
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final DateTime createdAt;
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ChatMessage({
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required this.id,
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required this.senderType,
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required this.content,
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this.type = 'text',
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this.status = 'sent',
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required this.createdAt,
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});
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ChatMessage copyWith({String? status}) {
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return ChatMessage(
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id: id,
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senderType: senderType,
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content: content,
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type: type,
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status: status ?? this.status,
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createdAt: createdAt,
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);
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}
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}
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// Bloc
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class MitraChatBloc extends Bloc<MitraChatEvent, MitraChatState> {
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final ApiClient apiClient;
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WebSocketChannel? _channel;
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StreamSubscription? _wsSubscription;
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Timer? _typingTimer;
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MitraChatBloc({required this.apiClient}) : super(ChatInitial()) {
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on<ConnectChat>(_onConnect);
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on<DisconnectChat>(_onDisconnect);
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on<SendMessage>(_onSendMessage);
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on<SendTyping>(_onSendTyping);
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on<_MessageReceived>(_onMessageReceived);
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on<_ConnectionError>(_onConnectionError);
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on<MarkMessagesDelivered>(_onMarkDelivered);
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on<MarkMessagesRead>(_onMarkRead);
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}
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Future<void> _onConnect(ConnectChat event, Emitter<MitraChatState> emit) async {
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emit(ChatConnecting());
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try {
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final response = await apiClient.get('/api/shared/chat/${event.sessionId}/messages');
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final messagesData = response['data'] as List<dynamic>;
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final messages = messagesData.map((m) => ChatMessage(
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id: m['id'] as String,
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senderType: m['sender_type'] as String,
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content: m['content'] as String,
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type: m['type'] as String? ?? 'text',
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status: m['status'] as String? ?? 'sent',
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createdAt: DateTime.parse(m['created_at'] as String),
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)).toList();
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final user = FirebaseAuth.instance.currentUser;
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final token = await user?.getIdToken();
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final wsUrl = ApiClient.baseUrl
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.replaceFirst('https://', 'wss://')
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.replaceFirst('http://', 'ws://');
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_channel = WebSocketChannel.connect(Uri.parse('$wsUrl/api/shared/ws'));
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_wsSubscription = _channel!.stream.listen(
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(raw) {
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final data = jsonDecode(raw as String) as Map<String, dynamic>;
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add(_MessageReceived(data));
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},
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onError: (_) => add(_ConnectionError()),
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onDone: () => add(_ConnectionError()),
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);
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_channel!.sink.add(jsonEncode({
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'type': 'auth',
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'token': token,
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'session_id': event.sessionId,
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}));
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emit(ChatConnected(messages: messages));
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} catch (e) {
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emit(ChatError('Gagal terhubung ke chat.'));
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}
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}
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void _onDisconnect(DisconnectChat event, Emitter<MitraChatState> emit) {
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_cleanup();
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emit(ChatInitial());
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}
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void _onSendMessage(SendMessage event, Emitter<MitraChatState> emit) {
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if (state is! ChatConnected || _channel == null) return;
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final current = state as ChatConnected;
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final tempId = 'temp_${DateTime.now().millisecondsSinceEpoch}';
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final msg = ChatMessage(
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id: tempId,
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senderType: 'mitra',
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content: event.content,
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status: 'sending',
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createdAt: DateTime.now(),
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);
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emit(current.copyWith(messages: [...current.messages, msg]));
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_channel!.sink.add(jsonEncode({
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'type': 'message',
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'content': event.content,
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'_temp_id': tempId,
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}));
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}
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void _onSendTyping(SendTyping event, Emitter<MitraChatState> emit) {
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if (_channel == null) return;
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_channel!.sink.add(jsonEncode({'type': 'typing'}));
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}
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void _onMarkDelivered(MarkMessagesDelivered event, Emitter<MitraChatState> emit) {
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if (_channel == null) return;
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_channel!.sink.add(jsonEncode({'type': 'delivered', 'message_ids': event.messageIds}));
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}
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void _onMarkRead(MarkMessagesRead event, Emitter<MitraChatState> emit) {
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if (_channel == null) return;
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_channel!.sink.add(jsonEncode({'type': 'read', 'message_ids': event.messageIds}));
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}
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void _onMessageReceived(_MessageReceived event, Emitter<MitraChatState> emit) {
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if (state is! ChatConnected) return;
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final current = state as ChatConnected;
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final data = event.data;
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final type = data['type'] as String?;
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switch (type) {
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case 'auth_ok':
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break;
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case 'message':
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final msg = ChatMessage(
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id: data['message_id'] as String,
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senderType: data['sender_type'] as String,
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content: data['content'] as String,
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type: data['message_type'] as String? ?? 'text',
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status: 'sent',
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createdAt: DateTime.parse(data['created_at'] as String),
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);
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emit(current.copyWith(messages: [...current.messages, msg]));
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add(MarkMessagesDelivered([msg.id]));
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break;
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case 'message_ack':
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final messageId = data['message_id'] as String;
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final status = data['status'] as String;
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final updatedMessages = current.messages.map((m) {
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if (m.status == 'sending') return m.copyWith(status: status);
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return m;
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}).toList();
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final idx = updatedMessages.indexWhere((m) => m.status == status && m.senderType == 'mitra');
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if (idx >= 0) {
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final old = updatedMessages[idx];
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updatedMessages[idx] = ChatMessage(
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id: messageId,
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senderType: old.senderType,
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content: old.content,
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type: old.type,
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status: status,
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createdAt: old.createdAt,
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);
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}
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emit(current.copyWith(messages: updatedMessages));
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break;
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case 'message_status':
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final messageIds = (data['message_ids'] as List<dynamic>).cast<String>();
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final status = data['status'] as String;
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final updatedMessages = current.messages.map((m) {
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if (messageIds.contains(m.id)) return m.copyWith(status: status);
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return m;
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}).toList();
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emit(current.copyWith(messages: updatedMessages));
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break;
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case 'typing':
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emit(current.copyWith(isOtherTyping: true));
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_typingTimer?.cancel();
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_typingTimer = Timer(const Duration(seconds: 3), () {
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if (state is ChatConnected) {
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emit((state as ChatConnected).copyWith(isOtherTyping: false));
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}
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});
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break;
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case 'session_timer':
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emit(current.copyWith(remainingSeconds: data['remaining_seconds'] as int?));
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break;
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case 'session_expired':
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emit(current.copyWith(sessionExpired: true));
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break;
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case 'extension_request':
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emit(current.copyWith(extensionRequest: data));
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break;
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case 'session_resumed':
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emit(current.copyWith(sessionExpired: false, extensionRequest: null));
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break;
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case 'session_closing':
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emit(current.copyWith(sessionClosing: true));
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break;
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case 'session_completed':
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_cleanup();
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break;
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}
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}
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void _onConnectionError(_ConnectionError event, Emitter<MitraChatState> emit) {}
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void _cleanup() {
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_wsSubscription?.cancel();
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_wsSubscription = null;
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_channel?.sink.close();
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_channel = null;
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_typingTimer?.cancel();
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_typingTimer = null;
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}
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@override
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Future<void> close() {
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_cleanup();
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return super.close();
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}
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}
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Reference in New Issue
Block a user